RT Journal Article SR Electronic T1 Unpublished Papers Perish JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 962 OP 963 VO 20 IS 6 A1 Quencer, Robert M. A1 Grossman, Robert J. YR 1999 UL http://www.ajnr.org/content/20/6/962.abstract AB